UA4509 New YorkEWR · 12:05 GreensboroGSO
UA4509 by United Airlines flies from New York (EWR) to Greensboro (GSO).
scheduled from EWR
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operation0 cancelled · 9 operations tracked
The route today
live boardsTomorrow on this route
ForecastNew York to Greensboro with United Airlines · Sun 1 Nov, local date
- Chance a departure is cancelled
- 2.0%0.3× usual
- Chance a departure leaves 60+ min late
- 5.6%0.6× usual
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other New York to Greensboro flights today
same route · United AirlinesIf UA4509 is cancelled, these are the other United Airlines nonstop flights from New York to Greensboro on the same day, with scheduled departure times in EWR local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How UA4509 actually runs
Pro Flight Search has tracked every published board update for UA4509 across the EWR and GSO boards: schedule changes, gate pushes and actual clocks. Usually departs ~6 min early. Based on 9 confirmed departures · 8/9 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4509 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as EWR and GSO published them.
Planning around UA4509? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: UA4509 New York to Greensboro on-time performance, measured from the EWR and GSO airport boards.
https://proflightsearch.com/flight/UA4509
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